Question

After I run, when I type the value in Username textbox and clicked submit button.
In Controller I check the object its showing null values…. If i remove the forloop and list its working…… give me a solution

Controller :

 [HttpGet]
        public ActionResult Index()
        {
            return View();
        }


        [HttpPost]
        public ActionResult Index(LogonViewModel lvm)
        {
            LogonViewModel lv = new LogonViewModel();

            return View();
        }

Model:

 public class LogonViewModel
    {
        [Required(ErrorMessage = "User Name is Required")]
        public string UserName { get; set; }
    }

View

@model IList<clientval.Models.LogonViewModel>

@{
    ViewBag.Title = "Index";
}

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>   
<script src="../../assets/js/val.js" type="text/javascript"></script>

@using (Html.BeginForm())
{
    for (int i = 0; i < 1; i++)
    {  
    @Html.LabelFor(m => m[i].UserName)
    @Html.TextBoxFor(m => m[i].UserName)
     @Html.ValidationMessageFor(per => per[i].UserName)

    <input type="submit" value="submit" />
    }
}

Answer 1

Your POST controller action must take a collection because that’s what you have in your view:

[HttpPost]
public ActionResult Index(IList<LogonViewModel> lvm)
{
    ...
}